Aiming at technical requirements

such as remote areas

complex conditions

all-weather monitoring and so on

a distributed monitoring system based on abnormal sound events is developed

through distributed protection of sensor nodes

the system can real-time acquire and process environmental sound in mornitoring area

extract characteristic value.Analyze its statistical characteristic based on statistical method

set up related sound model directly from environment.System uses Neyman-Pearson criterion and completes the threshold statistics of environmental sound background.Experimental results show that the above method can effectively calculate background threshold.At the same time

system uses threshold detection and technology combined with sound and image

improve intelligence and accuracy of system.